NGK INSULATORS, LTD.
4,959Patents
2,418Active
4,959Granted
55Portfolio score
Filing activity: Apr 21, 1975 → Mar 1, 2024 · 590 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| USD609655S1 | Electrostatic chuck | General | 573 | Expired |
| US6160244A | Susceptors | Electricity | 541 | Expired |
| US6645304B2 | Susceptors for semiconductor-producing apparatuses | Electricity | 524 | Expired |
| US6471779B1 | Gas feed ceramic structure for semiconductor-producing apparatus | Electricity | 500 | Expired |
| US6608745B2 | Electrostatic chunks | Electricity | 464 | Expired |
| US6783875B2 | Halogen gas plasma-resistive members and method for producing the same, laminates, and corrosion-resistant members | Emerging Cross-Sectional Technologies | 429 | Expired |
| US6139983A | Corrosion-resistant member, wafer-supporting member, and method of manufacturing the same | Emerging Cross-Sectional Technologies | 332 | Expired |
| US6239402A | Aluminum nitride-based sintered bodies, corrosion-resistant members, metal-buried articles and semiconductor-holding apparatuses | Electricity | 298 | Expired |
| US5231690A | Wafer heaters for use in semiconductor-producing apparatus and heating units using such wafer heaters | Electricity | 271 | Expired |
| US5280156A | Wafer heating apparatus and with ceramic substrate and dielectric layer having electrostatic chucking means | Emerging Cross-Sectional Technologies | 250 | Expired |
| US6690344B1 | Method and apparatus for driving device and display | Physics | 199 | Expired |
| US6542050B1 | Transmitter-receiver | Electricity | 169 | Expired |
| US5232765A | Distributed constant circuit board using ceramic substrate material | Emerging Cross-Sectional Technologies | 148 | Expired |
| US4798693A | Method of manufacturing an electrochemical device | Physics | 147 | Expired |
| US5475279A | Piezoelectric/electrostrictive actuator having integral ceramic base member and film-type piezoelectric/electrostrictive element (S) | Performing Operations; Transporting | 146 | Expired |
| US6828881B2 | Stacked dielectric filter | Electricity | 146 | Expired |
| US7965015B2 | Lamb wave device | Electricity | 138 | Active |
| US4293357A | Method for producing ceramic honeycomb filters | Emerging Cross-Sectional Technologies | 126 | Expired |
| US4709330A | System for supervising and guiding persons in construction | Physics | 126 | Expired |
| US6001760A | Aluminum nitride sintered body, metal embedded article, electronic functional material and electrostatic chuck | Emerging Cross-Sectional Technologies | 120 | Expired |
| US5439865A | Catalyst for exhaust gas purification and process for production thereof | Emerging Cross-Sectional Technologies | 114 | Expired |
| US5884473A | System for exhaust gas purification and method for exhaust gas purification using said system | Emerging Cross-Sectional Technologies | 109 | Expired |
| US5063029A | Resistance adjusting type heater and catalytic converter | Emerging Cross-Sectional Technologies | 105 | Expired |
| US5872069A | Glass-ceramics for magnetic disc substrate, magnetic disc substrate and magnetic disc | Physics | 102 | Expired |
| US6257224A | Process for working a preform made of an oxide single crystal, and a process for producing functional devices | Emerging Cross-Sectional Technologies | 102 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.